Can I Accurately Mix Nitro Fuel Without a Hydrometer?

[moe7404]

i just started a hobby i couldn't afford till now. radio control cars. iam have been running a nitro truck for 7 mo. i started mixing my own nitro fuel, 30% nitro, 10% oil, rest methanol. i have been measuring by volume. i was told that doing it this way it will be off, by a cretin amount. i understand why this happenes. but what i need is a way to get the right amounts/ percents, without having to buy a hydrometer. i think if i measure volume and weight i should be able to get it closer than it is now. i am mixing a total 16 oz at a time. any help would be great, thanks.

 

[Borek]

You can measure by volume, just take densities into account. For example to prepare 100 g of mixture you need 60 g of methanol - and methanol density is 0.8 g/mL, so you need 75 mL.

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[chemisttree]

Those percentages are usually by volume I believe.